relax SVN archive

Created the new generic_fns.result_files for standardising the handling of results files.

This fixes the bug where results files are repetitively added to the list. All of the code touching
cdp.result_files now uses this module instead.

Bug fix for the repetition of Monte Carlo simulations in the relaxation curve-fitting analyses.

This is in the specific analysis API, so will allow all analysis types to repeat Monte Carlo
simulations for error analysis.

Updated the scripting section of the intro chapter of the user manual for non-technical users.

See http://www.mail-archive.com/relax-users@.../msg01253.html and bug #20174
(http://gna.org/bugs/?20174).

MS Windows fix - the NOE system and GUI tests are now less strict in checking the errors.

Expanded the spin ID list for the structure.load_spins user function.

This now includes the spins "@N", "@NE1", "@C", "@H", "@O", "@P", ":A@...", ":A@...", ":G@...",
":G@...", ":C@...", ":C@...", ":U@...", ":U@...", ":U@...".

Proper bug fix for storing the execution status of wizard and user function pages.

This allows the test suite to pass again. The execution status is now properly returned from the
wizard pages run synchronously (and always set to True for asynchronous calls).

Fix for bug #20173 (https://gna.org/bugs/?20173).

The palmer.create user function should have been checking that the diffusion tensor had been
initialised. This is now being performed.

Changed the RelaxError for missing relaxation times in the relaxation curve-fitting analyses.

Comment spelling fix.

Modified the test_bug_20152_read_dc_file() GUI test to catch the RelaxError!

This error is because of the old PDC format.